Unfortunately for your point, you picked an Android Wear device, whose displays can be set to be on all the time (or at least an abbreviated watch face mode).
More specifically, you picked an LG Watch R, which has the most beautiful and highly visible always-on display that I've seen yet. As luck would have it, I just got one in and have been wearing it all day (*)
If you want to give example ads where a smartwatch should really mostly have a dead display, you'd be more accurate to use Apple Watch ads instead.
(*) I've read many comments from people who say this or that about Android Wear watches.
So I did what I often do: buy used versions of the devices begin discussed, so I can see for myself and then speak from authority. So far, I've gotten the Moto 360, LG G Watch, Samsung Gear Live, and now the LG Watch R. I have to say that the LGWR has impressed me more than all of the rest put together. It doesn't look too big even on my fairly slim wrist, the display is bright and incredibly easy to read, and it's fully round. Now I'll see if it can really go 24 hours without charging.